SNLS344G July   2011  – August 2015 DS80PCI102

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Electrical Characteristics
    5. 6.5 Electrical Characteristics — Serial Management Bus Interface
    6. 6.6 Timing Diagrams
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 4-Level Input Configuration Guidelines
    4. 7.4 Device Functional Modes
      1. 7.4.1 Pin Control Mode
      2. 7.4.2 SMBUS Mode
    5. 7.5 Programming
      1. 7.5.1 System Management Bus (SMBus) and Configuration Registers
      2. 7.5.2 Transfer of Data Through the SMBus
      3. 7.5.3 SMBus Transactions
      4. 7.5.4 Writing a Register
      5. 7.5.5 Reading a Register
      6. 7.5.6 EEPROM Programming
        1. 7.5.6.1 Master EEPROM Programming
        2. 7.5.6.2 EEPROM Address Mapping
    6. 7.6 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 3.3-V or 2.5-V Supply Mode Operation
    2. 9.2 Power Supply Bypass
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Comprehensive Family, Proven System Interoperability
    • DS80PCI102: x1 PCIe
      Gen-1, Gen-2, and Gen-3
    • DS80PCI402: x4 PCIe
      Gen-1, Gen-2, and Gen-3
    • DS80PCI800: x8/x16 PCIe
      Gen-1, Gen-2, and Gen-3
  • Automatic Rate-Detect and Adaptation to
    Gen-1, Gen-2, and Gen-3 Speeds
  • Seamless Support for Gen-3 Transmit FIR Handshake
  • Receiver EQ (up to 36 dB), Transmit De-Emphasis (up to -12 dB)
  • Adjustable Transmit VOD: 0.7 to 1.3 Vp-p (Pin Mode)
  • 0.2 UI of Residual Deterministic Jitter at 8 Gbps After 40 Inches of FR4 or 10 m 30-awg PCIe Cable
  • Low Power Dissipation With Ability to Turn Off Unused Channels: 65 mW/Channel
  • Automatic Receiver Detect (Hot-Plug)
  • Multiple Configuration Modes: Pins/SMBus/Direct-EEPROM Load
  • Flow-Thru Pinout in 4-mm × 4-mm 24-Pin Leadless WQFN Package
  • Single Supply Voltage: 2.5 V or 3.3 V (Selectable)
  • ±5-kV HBM ESD Rating
  • −40°C to 85°C Operating Temperature Range

2 Applications

    PCI Express Gen-1, Gen-2, and Gen-3

3 Description

The DS80PCI102 is a low-power, 1-lane repeater with 4-stage input equalization, and an output de-emphasis driver to enhance the reach of PCI-Express serial links in board-to-board or cable interconnects. The device is ideal for x1 PCI-Express configuration, and it automatically detects and adapts to Gen-1, Gen-2, and Gen-3 data rates for easy system upgrade.

DS80PCI102 offers programmable transmit de-emphasis (up to 12 dB), transmit VOD (up to
1300 mVp-p), and receive equalization (up to 36 dB) to enable longer distance transmission in lossy copper cables (10 meters or more), or backplanes (40 inches or more) with multiple connectors. The receiver can open an input eye that is completely closed due to inter-symbol interference (ISI) introduced by the interconnect medium.

The programmable settings can be applied easily through pins or software (SMBus/I2C), or can be loaded through an external EEPROM. When operating in the EEPROM mode, the configuration information is automatically loaded on power up, which eliminates the need for an external microprocessor or software driver.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DS80PCI102 WQFN (24) 4.00 mm x 4.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Block Diagram

DS80PCI102 ds80pci102_typical_app.gif

Simplified Schematic Diagram

DS80PCI102 ds80pci102_simplified_schematic.gif